We could use it everywhere, but it's better to reduce the already big
amount of configuration options the admin is confronted with than the
small problem this option solves.

Reimplement getPreferredTranslation outside of IdPDisco so it's reusable
and much more complete. The new method will search the current, default
and fallback language for a displayable string in various metadata
fields. This should be much more complete and robust than previous
approches. Make it a Twig filter so it can also be used there.

* Migrate email utils to non-static

* Migrate http utils to non-static

* Migrate net utils to non-static

* Migrate random utils to non-static

* Migrate system utils to non-static

* Migrate time utils to non-static

* Migrate xml utils to non-static

* Upgrade notes

* Update test-framework

* Fix tests

* Migrate array utils to non-static

* Migrate attribute utils to non-static

* Migrate auth utils to non-static

* Migrate config utils to non-static

* Migrate crypto utils to non-static

* Raise coverage

* Fix rebase issue

Sometimes we patch or edit a hook to meet our specific needs.
Somtimes this leaves behind a file like FILENAME.orig. The hook
detection login still runs these other files, making for confusing
debugging issues. Use a stricter match on what makes a valid hook name
to avoid these issues.

* Allows custom logging handler on the console

This is useful for reducing noise during tests

Co-authored-by: Tim van Dijen <tvdijen@gmail.com>

* Start testing on PHP 8.0

* Update test-framework

* Fix broken unit tests

* Fix query; apparently under PHP8 the query would raise PDOException instead of returning false

Follow the suggestions of [draft-knodel-terminology-00](https://tools.ietf.org/id/draft-knodel-terminology-00.html)
and other language frameworks and replace the notion of master/slave
with a more neutral primary/secondary.

Convert to our wrapper class for assertions